Internal-combustion engine.



0. E. MICHAUD.

INTERNAL comsusnow ENGINE.

APPLICATION FILED APR. I3. 1916- Patented Apr. 16, 1918.

4 SHEETSSHEET 0. E MICHAUD.

ENTEBNAL COMBUSTION ENGINE. APPLICATION HLED APR. 13. 1916,

1,283,336., Patented Apr. 16, 1918.

O. E MICHAUD.

INTERNAL COMBUSTION ENGINE.

APPLICATION men APR.13. 191s.

Patented Apr. 16, 1918 0, E MICHAUD.

INTERNAL comsusnow ENGINE.

APPLICATION FILED APR. 13. I916.

Patented; Apr. 16,1918.

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NITED STATES PATENT tors on. I

onnsmn E. MIGHAUD, or s'r. LoUIs, ivnssouni, essreivort or ONE-HALF T0 rnrrz, A.

MULLER, or MOGEHEE, ARKANSAS.

INTERNAL-COMBUSTION ENGINE.

Specification of Letters Patent. Patented Apr, 16, 1918'.

Application filedApril 13, 1916. Serial No. 90,806.

To all whom itmag concern:

Be it known that I, ONESIME E. MIOHAUD, a citizen of the United States, and a resident of the city of St. Louis and State of Missouri, have invented a new and useful Improvement in Internal-Combustion Engines, of which the following is a specification.,

This invention relates to four stroke cycle explosion engines having mechanically operated valves, and particularly concerns the valves, valve operating means, and the means for lubricating and for cooling the valves and cylinders.

The objects of the invention are simplicity and strength of construction. lightweight, accessibility of operating parts, and positive lubrication and cooling whereby little atten tion is required to operate the engine and keep it in good order.

The invention consists in the arrangement of the valves in chambers alongside of the cylinders and in the means for operat ing them without cams or rocker arms; also in means for supplying lubricant to the valves and for keeping the valves tight; also in the arrangement of fan and heat radiating fins for cooling the valves and cylinders; and also in the details of construction of the several parts as hereinafter described in the appended claims.

In the drawings, wherein the same figures designate like parts in the several views,

Figure 1 is a top plan view of an engine embodying the invention;

Fig. 2 is a part side elevation, and part longitudinal vertical section on the line 2-2 in Fig. 1 of the same;

Figs. 3, 4. and 5 are vertical cross-sections of the same on the lines 33, 4.-& and 5-5, respectively, in Fig. 1;

Fig. 6 is a horizontal cross-section of the middle portion of the engine shown in Fig. 1, on the line 66 in Fig. 5; and

Fig. 7 is a horizontal cross-section of a portion of the cylinders and valves on the line 77 in Fig. 2.

The engine shown in the drawings comprises four vertical cylinders 11 cast in pairs and arranged in a row on the base 12. The crank-shaft 13 is horizontally disposed in bearings 14 in the lower side of the base 12, and is inclosed within the base between it and a lower base or pan 15. The pistons 16 are connected to the cranks of the crank shaft by means of the connecting rods 17.

The inlet valves 18 and exhaust valves 19 are hollow cylinders vertically disposed in a row in alternation alongside of theengine cylinders, and tapering slightly on the exterior from top to bottom to fit in corre spondingly tapered chambers formed in enlargements-of the side Walls oflthe. cylinders. The inlet valves have'ports 20 registering withpassages or openings 21 in the side walls of the cylinders near their upper ends. The exhaust valves have ports 22 at their upper ends registering with passages 1 or openings 23 in the side walls of the cylinders at their upper-ends, and ports 2& at their lower ends registering with the pas-. sages or openings 25 in the side walls of the cylinders near their lower ends. The lower ends of the valves are open and communicate with the inlet and exhaust pipes.

The inlet and exhaust valves are rotated in opposite directions by means of gears 26 on their upper ends which are driven at half the speed of the engine crank shaft. The tops of the valves are closed, and the valves are held in position in the valve chambers by means of a hollow yoke 27 having aseries of hollow tubes 28 which press on'the tops valve 30 permits surplus oil to return to l the crank case.

In the engine shown inthe drawings, the crank shaft 13 has a bevel gear 31 on it between cylinders which drives a bevel gear 32 on the lower end of a vertical shaft 33. The upper end of the vertical shaft 33 carries a fan 34 for cooling the engine. A vertical half-time shaft 35 is arranged parallel to the shaft 33 and is rotated therefrom by the two to one reduction gears 36 and 37. The lower ends of the shafts 33 and 35 and the gears are inclosed in a detachable housing 38 which is secured to the top of the base 12 between the middle cylinders. The upper end of the half-time shaft carries a gear 39 which is operatively connected with the gears 26 on the valves for rotating them at one-half the speed of the crank shaft. The shafts 33 and 35 are suitably mounted on thrust antifriction bearings 40 and 41 arcylinders, said valves having closed ends and being arranged in chambers having open ends to close said open ends, and a spring-pressed member engaging said valves for retaining them in said chambers.

An explosion engine having a series of parallel cylinders, rotary valves for said cylindersysaid valves being arranged in chamberslhaving open ends, and a springpressed yoke for retaining said valves in said chambers, said yoke having ducts in it for conducting oil to said valves.

3. An explosion engine having a crankshaft and a plurality of vertical cylinders arranged in a I'OW over said crank-shaft With their axis parallel, rotary valves for said cylinders, said valves being housed in open ended chambers alongside of and parallel to said cylinders, the ends of said valves being closed, spring-pressed means bearing on the closed ends of said valves to retain them in place in said cylinders, gears on the closed ends of said valves, the gears on adjacent valves engaging each other whereby said valves are all geared to rotate together, and means for rotating said valves in synchronism With said crank shaft.

4. An explosion engine having a crank shaft and a plurality of vertical cylinders arranged in a row over said crank-shaft With their axis parallel, rotary valves for said cylinders, said valves being housed in open ended chambers alongside of and parallel to said cylinders,-the ends of said valves being closed, spring-pressed means bearing on the closed ends of said valves to retain them in place in said cylinders, oil ducts in said retaining means leadingto said valves, oil ducts in theclosed ends of said valves communicating with the oil ducts in said retaining means, and means for rotating said valves in synchronism With said crankshaft.

5. Means forrotating the inlet and ex haust valves of an engine from the crankshaft, said means comprising a driving shaft, a crank-shaft gear, and a mating gear on the end of said driving shaft, a side shaft alongside of said driving shaft, said shafts being journaled in bearings, gearing operatively connecting said shafts, said bearings and gearing being inclosed in a housing, and a gear on the exposed end of said side shaft, said gear driving trains of gears for operating said valves, the gears of said trains Whichrotate in one direction being operatively connected to the inlet valves and those which rotate in the op posite direction being operatively connected to the exhaust valves.

6. Means for rotating the inlet and exhaust valves of an engine from the crankshaft, said means comprising a driving shaft, a crank-shaft gear and a mating gear on the end of said driving shaft, a side shaft alongside of said driving shaft, and

a gear on said side shaft driving trains of gears for operating said valves, the gears of said trains Which rotate in one direction being operatively connected "to the inlet valves and those Which rotate in the opposite direction being operatively connected to the exhaust valves, each of said valves being separately removable endWise With its respective driving gear Without disturbing the other driving gears.

Signed at St. Louis, Missouri, this 10th day'of April, 1916.

ONESIME E. MIGHAUD.

@opfleaofl this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D, G. 

